Home
Blog
Overview of all products
SalesData
LibraryData
CataList
Loan Stars
BiblioShare
Webform
EDI
Products for publishers
Products for retailers
Products for libraries
Information for authors
BNC Research
Canadian literary awards
SalesData & LibraryData Research Portal
Events
Tech Forum
Webinars & Training
Code of Conduct
Standards
EDI standards
Product identifiers
Classification schemes
ONIX standards
About
Contact us
Media
Bestseller lists
Newsletters
Podcast
Jobs
SalesData
LibraryData
CataList
BiblioShare
Webform
EDI

BookNet Canada

Home
Blog
Overview of all products
SalesData
LibraryData
CataList
Loan Stars
BiblioShare
Webform
EDI
Products for publishers
Products for retailers
Products for libraries
Information for authors
BNC Research
Canadian literary awards
SalesData & LibraryData Research Portal
Events
Tech Forum
Webinars & Training
Code of Conduct
Standards
EDI standards
Product identifiers
Classification schemes
ONIX standards
About
Contact us
Media
Bestseller lists
Newsletters
Podcast
Jobs
SalesData
LibraryData
CataList
BiblioShare
Webform
EDI
BookNet Canada
June 16, 2025
Tech Forum, Standards & Metadata

Common metadata issues and how to fix them: Not providing age range data

BookNet Canada
June 16, 2025
Tech Forum, Standards & Metadata

At BookNet, metadata is at the core of what we do. With so much of it flowing in and out of our products and services, we’ve seen it all. In this blog series, we will share each of the common issues addressed in the Improving your metadata: Common issues and how to fix them Tech Forum presentation where eight BookNetters walk you through some of the most common issues we see in publishers’ metadata, highlighting what metadata standards are recommended for each case and showing you how to fix these common problems.

Why is this important? Accurate, high-quality metadata ensures your books are seen and that they succeed in today’s competitive marketplace. Join us as we help you optimize your metadata and unlock its full potential!

The issue: Not providing age range data

Image source: theverge.com/2017/7/13/15966094/30-rock-buscemi-how-do-you-do-fellow-kids-meme-kill-it-please

They say age ain't nothing but a number, but when it comes to the metadata of books for young readers, that number is critically important. Age range data refers to the specific range in years or school grades of the intended audience for products aimed at children and young adults.

Think about it: Without proper age range information, your books may not reach their intended audience, resulting in misplaced products, confused shoppers, and ultimately, lost sales opportunities.

Why is this an issue?

When age range data is missing or too broad, multiple problems arise throughout the supply chain:

  • Book buyers can't easily locate books appropriate for the developmental stages of the children they're buying for

  • Booksellers don't know which sections of the store to display your titles in

  • Online retailers can't properly filter and categorize your books

Age range data, when properly included in metadata, appears alongside the title's bibliographic details on retailer websites, catalogues, marketing materials, and on BookNet Canada products like CataList and SalesData.

What BookNet recommends

1. Follow industry standards:

The BookNet Canada & Book Industry Study Group’s Best Practices for Product Metadata states that age range data must be supplied for all trade products aimed at children and young adults. Data suppliers should be sure to refer to this guide as it's full of excellent information about how companies are actually using metadata in the Canadian market.

2. Be precise with your ranges:

Data suppliers should provide specific and realistic age ranges:

  • Children’s books should rarely exceed two years at the lower end.

  • At the upper end, ranges can be larger (perhaps three to four years)/

  • Avoid overly broad ranges like "ages 6 to 11" or "grades 2 to 7"

  • Avoid unhelpful open-ended ranges like "0 to 99"

  • A narrow range such as "ages 8 to 9" is more realistic and useful

3. Use appropriate ONIX coding:

To indicate age range in your ONIX data, refer to Codelist 30 for available options:

  • Age, grade, reading level, and interest age are most commonly used

  • Ages are expressed by year (or months for infants)

  • Values should be numbers, with the codelist defining what's being measured

  • You can provide specific lower and upper ages (like 10 to 14 years)

  • Use "from" to indicate a lower age only or "to" for an upper age only

4. Review this ONIX example:

Here is the ONIX data for a book intended for two- to five-year-olds:

<AudienceRange>

<AudienceRangeQualifier>18</AudienceRangeQualifier> ← From Codelist 30, refers to “Reading age, years”

<AudienceRangePrecision>03</AudienceRangePrecision> ← Code for "FROM"

<AudienceRangeValue>2</AudienceRangeValue> ← age two

<AudienceRangePrecision>04</AudienceRangePrecision> ← Code for "TO"

<AudienceRangeValue>5</AudienceRangeValue> ← age five

</AudienceRange>

With this data, booksellers will know where to shelve this title, consumers will know it's suitable for their toddler or pre-schooler, and publishers will know that their books are being easily found and purchased.

 

Need help? Don't hesitate to reach out to the BookNet team with specific questions.

The complete slide deck and transcript from this session are available here.

To stay up to date, subscribe to our weekly newsletter, eNews, where we share news about upcoming events and webinars, infographics and new research, updates on industry standards, links round-ups, and more.

Subscribe

Don’t miss any new blog posts. Sign up for our weekly eNews to receive updates.

You can unsubscribe at any time. We respect your privacy.

Thank you!
Recent posts
Podcast: A conversation about the present and future of audiobooks
Podcast: A conversation about the present and future of audiobooks

What’s trending for audiobooks in 2026?

Read more →
Have you heard? There's a new way to identify Canadian publishers using BISAC Merchandising Codes
Have you heard? There's a new way to identify Canadian publishers using BISAC Merchandising Codes

ICYMI, the Book Industry Study Group (BISG) published the 2025 update to its book publishing subject codes.

Read more →
Scrolling stories: Ebook use in Canada 2025
Scrolling stories: Ebook use in Canada 2025

Get a free copy of the study today!

Read more →
July 2026 Loan Stars Adult Canadian top picks
July 2026 Loan Stars Adult Canadian top picks

Find out which titles made it to the July 2026 Loan Stars Adult Canadian list.

Read more →
You are special: Using ONIX to effectively identify special editions in the marketplace
You are special: Using ONIX to effectively identify special editions in the marketplace

If you’ve struggled to properly define what makes your book “special,” this Application Note will help to end the struggle.

Read more →
Tips to help independent booksellers and independent publishers better collaborate
Tips to help independent booksellers and independent publishers better collaborate

Practical strategies that allow indie booksellers and publishers to strengthen their partnerships and sell more books.

Read more →
Registering for an ISNI
Registering for an ISNI

What is ISNI and why should you register for it?

Read more →
What's selling for summer?
What's selling for summer?

What have Canadians been buying for their summer reads?

Read more →
New SalesData &amp; LibraryData features: Quick Search improvements
New SalesData & LibraryData features: Quick Search improvements

Users can now narrow down their results further and use them to directly build other reports in SalesData & LibraryData.

Read more →
Subject Spotlight: Satire
Subject Spotlight: Satire

Sales and library circulation data of Satire titles during the the first quarter of 2026.

Read more →
How are you approaching AI? Take the AI use in the North American book industry survey 2026
How are you approaching AI? Take the AI use in the North American book industry survey 2026

Whether you’re all in on AI, all out, or somewhere in between, we want to hear from you.

Read more →
Can we give up completely on ONIX 2.1?
Can we give up completely on ONIX 2.1?

This year, some major industry players have announced their intent to end their support of the ONIX 2.1 version leaving everyone asking the same question.

Read more →

Tagged: book metadata best practices

Newer PostHow is AI changing publishing?
Older PostDiscounts, data & decisions: Navigating hesitant consumer spending
No results found
Blog RSS

The Canadian Book Market 2025 is the comprehensive guide to the Canadian market with in-depth category data.

Get your copy now

Listen to our latest podcast episode


  • Research & Analysis 486
  • Ebooks 304
  • Tech Forum 280
  • Conferences & Events 262
  • Standards & Metadata 255
  • Bookselling 222
  • Publishing 201
  • ONIX 197
  • Marketing 153
  • Podcasts 129
  • ebookcraft 112
  • BookNet News 107
  • Loan Stars 79
  • Libraries 67
  • BiblioShare 59
  • 5 Questions With 53
  • SalesData 52
  • Thema 47
  • CataList 44
  • Awards 30
  • Diversity & Inclusion 21
  • Sustainability 19
  • Publishing & COVID-19 18
  • EU Regulations 16
  • LibraryData 10
  • ISNI 5

 

 

BookNet Canada is a non-profit organization that develops technology, standards, and education to serve the Canadian book industry. Founded in 2002 to address systemic challenges in the industry, BookNet Canada supports publishing companies, booksellers, wholesalers, distributors, sales agents, industry associations, literary agents, media, and libraries across the country.

 

Privacy Policy | Accessibility Policy | About Us

BOOKNET CANADA

Contact us | (416) 362-5057 or toll free 1 (877) 770-5261

We acknowledge the financial support of the Government of Canada through the Canada Book Fund (CBF) for this project.

Back to Top

BookNet Canada acknowledges that its operations are remote and our colleagues contribute their work from the traditional territories of the Mississaugas of the Credit First Nation, the Anishnawbe, the Haudenosaunee, the Wyandot, the Mi’kmaq, the Ojibwa of Fort William First Nation, the Three Fires Confederacy of First Nations (which includes the Ojibwa, the Odawa, and the Potawatomie), and the Métis, the original nations and peoples of the lands we now call Beeton, Brampton, Guelph, Halifax, Thunder Bay, Toronto, Vaughan, and Windsor. We endorse the Calls to Action from the Truth and Reconciliation Commission of Canada (PDF) and support an ongoing shift from gatekeeping to spacemaking in the book industry.